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<?php
namespace mikehaertl\pdftk;
use mikehaertl\tmp\File;
/**
* XfdfFile
*
* This class represents a temporary XFDF file that can be used to fill a PDF
* form with valid unicode characters.
*
* Form data must be passed to the constructor as an array in this form:
*
* ```
* [
* // Field name => field value
* 'Firstname' => 'John',
*
* // Hierarchical/nested fields in dot notation
* 'Address.Street' => 'Some Street',
* 'Address.City' => 'Any City',
*
* // Multi value fields
* 'Pets' => ['Cat', 'Mouse'],
* ]
* ```
*
* This will result in the following XML structure (header/footer omitted):
*
* ```
* <field name="Firstname">
* <Value>John</Value>
* </field>
* <field name="Address">
* <field name="Street">
* <Value>Some Street</Value>
* </field>
* <field name="City">
* <Value>Any City</Value>
* </field>
* </field>
* <field name="Pets">
* <Value>Cat</Value>
* <Value>Mouse</Value>
* </field>
* ```
*
* @author Tomas Holy <holy@interconnect.cz>
* @author Michael Härtl <haertl.mike@gmail.com>
* @license http://www.opensource.org/licenses/MIT
*/
class XfdfFile extends File
{
// XFDF file header
const XFDF_HEADER = <<<FDF
<?xml version="1.0" encoding="UTF-8"?>
<xfdf xmlns="http://ns.adobe.com/xfdf/" xml:space="preserve">
<fields>
FDF;
// XFDF file footer
const XFDF_FOOTER = <<<FDF
</fields>
</xfdf>
FDF;
/**
* Constructor
*
*
* @param array $data the form data as name => value
* @param string|null $suffix the optional suffix for the tmp file
* @param string|null $prefix the optional prefix for the tmp file. If null
* 'php_tmpfile_' is used.
* @param string|null $directory directory where the file should be
* created. Autodetected if not provided.
* @param string|null $encoding of the data. Default is 'UTF-8'.
*/
public function __construct($data, $suffix = null, $prefix = null, $directory = null, $encoding = 'UTF-8')
{
if ($directory === null) {
$directory = self::getTempDir();
}
if ($suffix === null) {
$suffix = '.xfdf';
}
if ($prefix === null) {
$prefix = 'php_pdftk_xfdf_';
}
$tempfile = tempnam($directory, $prefix);
$this->_fileName = $tempfile . $suffix;
rename($tempfile, $this->_fileName);
$fields = $this->parseData($data, $encoding);
$this->writeXml($fields);
}
/**
* Parses an array of key/value data into a nested array structure.
*
* The data may use keys in dot notation (#55). Values can also be arrays in
* case of multi value fields (#148). To make both distinguishable in the
* result array keys that represent field names are prefixed with `_`. This
* also allows for numeric field names (#260).
*
* For example an array like this:
*
* ```
* [
* 'a' => 'value a',
* 'b.x' => 'value b.x',
* 'b.y' => 'value b.y',
*
* 'c.0' => 'val c.0',
* 'c.1' => 'val c.1',
*
* 'd' => ['m1', 'm2'],
* ]
* ```
*
* Will become:
*
* ```
* [
* '_a' => 'value a',
* '_b' => [
* '_x' => 'value b.x',
* '_y' => 'value b.y',
* ],
* '_c' => [
* '_0' => 'value c.0',
* '_1' => 'value c.1',
* ],
* '_d' => [
* // notice the missing underscore in the keys
* 0 => 'm1',
* 1 => 'm2',
* ],
* ]
*
*
* @param mixed $data the data to parse
* @param string the encoding of the data
* @return array the result array in UTF-8 encoding with dot keys converted
* to nested arrays
*/
protected function parseData($data, $encoding)
{
$result = array();
foreach ($data as $key => $value) {
if ($encoding !== 'UTF-8' && function_exists('mb_convert_encoding')) {
$key = mb_convert_encoding($key, 'UTF-8', $encoding);
$value = mb_convert_encoding($value, 'UTF-8', $encoding);
}
if (strpos($key, '.') === false) {
$result['_' . $key] = $value;
} else {
$target = &$result;
$keyParts = explode('.', $key);
$lastPart = array_pop($keyParts);
foreach ($keyParts as $part) {
if (!isset($target['_' . $part])) {
$target['_' . $part] = array();
}
$target = &$target['_' . $part];
}
$target['_' . $lastPart] = $value;
}
}
return $result;
}
/**
* Write the given fields to an XML file
*
* @param array $fields the fields in a nested array structure
*/
protected function writeXml($fields)
{
// Use fwrite, since file_put_contents() messes around with character encoding
$fp = fopen($this->_fileName, 'w');
fwrite($fp, self::XFDF_HEADER);
$this->writeFields($fp, $fields);
fwrite($fp, self::XFDF_FOOTER);
fclose($fp);
}
/**
* Write the fields to the given filepointer
*
* @param int $fp
* @param mixed[] $fields an array of field values as returned by
* `parseData()`.
*/
protected function writeFields($fp, $fields)
{
foreach ($fields as $key => $value) {
$key = $this->xmlEncode(substr($key,1));
fwrite($fp, "<field name=\"$key\">\n");
if (!is_array($value)) {
$value = array($value);
}
if (array_key_exists(0, $value)) {
// Numeric keys: single or multi-value field
foreach($value as $val) {
$val = $this->xmlEncode($val);
fwrite($fp, "<value>$val</value>\n");
}
} else {
// String keys: nested/hierarchical fields
$this->writeFields($fp, $value);
}
fwrite($fp, "</field>\n");
}
}
/**
* @param string $value the value to encode
* @return string the value correctly encoded for use in a XML document
*/
protected function xmlEncode($value)
{
return defined('ENT_XML1') ?
htmlspecialchars($value, ENT_XML1, 'UTF-8') :
htmlspecialchars($value);
}
}

vendor/mikehaertl/php-pdftk/src/XfdfFile.php line 227